package com.hmdp.service.impl;

import cn.hutool.core.bean.BeanUtil;
import cn.hutool.core.bean.copier.CopyOptions;
import cn.hutool.core.lang.UUID;
import cn.hutool.core.util.RandomUtil;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.hmdp.dto.LoginFormDTO;
import com.hmdp.dto.Result;
import com.hmdp.dto.UserDTO;
import com.hmdp.entity.User;
import com.hmdp.mapper.UserMapper;
import com.hmdp.service.IUserService;
import com.hmdp.utils.RegexUtils;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Service;


import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.TimeUnit;

import static com.hmdp.utils.RedisConstants.*;
import static com.hmdp.utils.SystemConstants.USER_NICK_NAME_PREFIX;

/**
 * <p>
 * 服务实现类
 * </p>
 *
 * @author 虎哥
 * @since 2021-12-22
 */
@Slf4j
@Service
public class UserServiceImpl extends ServiceImpl<UserMapper, User> implements IUserService {

    @Autowired
    private StringRedisTemplate stringRedisTemplate;

    @Override
    public Result sendCode(String phone) {
        if (RegexUtils.isPhoneInvalid(phone)) {
            return Result.fail("手机号码不正确！");
        }
        String code = RandomUtil.randomNumbers(6);
        stringRedisTemplate.opsForValue().set(LOGIN_CODE_KEY+phone,code,LOGIN_CODE_TTL, TimeUnit.MINUTES);
        //模拟发送短信验证码
        log.debug("发送验证码成功,验证码：{}",code);
        return Result.ok();
    }

    @Override
    public Result login(LoginFormDTO loginForm) {
        String code = stringRedisTemplate.opsForValue().get(LOGIN_CODE_KEY+loginForm.getPhone());
        if(code==null||!code.equals(loginForm.getCode())){
            //登录失败
            return Result.fail("验证码错误");
        }
        User user = query().eq("phone", loginForm.getPhone()).one();
        if(user==null){
            //新用户，创建用户保存
            User user1 = new User();
            user1.setPhone(loginForm.getPhone());
            user1.setNickName(USER_NICK_NAME_PREFIX+RandomUtil.randomString(10));
            user=user1;
            save(user);
        }
        UserDTO userDTO=new UserDTO();
        BeanUtils.copyProperties(user,userDTO);
        String token = UUID.randomUUID().toString(true);
        Map<String, Object> map = BeanUtil.beanToMap(userDTO,new HashMap<>()
                , CopyOptions.create().setIgnoreNullValue(true)
                        .setFieldValueEditor((fieldName,fieldValue)->fieldValue.toString()));
        stringRedisTemplate.opsForHash().putAll(LOGIN_USER_KEY+token,map);
        stringRedisTemplate.expire(LOGIN_USER_KEY+token,LOGIN_USER_TTL,TimeUnit.MINUTES);
        return Result.ok(token);
    }
}
